Repair shield



Mar. I 1,528,044

J. H. BURCW ET AL REPAIR SHIELD Filed Jari. 1'2, 1924 j -l l @j Patented Mar. 3, 1925.

UNITED 'STATI-:s

y 1,528,044 PATENTo1-"Fica JAMES H. BURROW ANDYGEORGE A. BURROW, 0F SPOKANE, WASHINGTON, .ASSIGNORS To BURROW MANUFACTURING COMPANY, or

roRA'rIoN OF WASHINGTON.

sroKANE, WASHINGTON, A OOR- REPAIR SHIELD.

l Applieauon mea January 12, 1924. serial No. 685,795.

To all whom t may concern.'

Be it known that we, JAMES yH. BURROW and GEORGE f A. vBURRoW, citizens of the United States, residing at Spokane, in Spokane County and State of Washington, have invented certain new and useful Improvements in Repair Shields, of which the following isv a specification. f rlhe present invention relates to improvements in repair'shields or boots for use between the outer casing and inner tubes of tires to close a puncture or reinforce a damaged casing. 'The primary object of the invention is the provision of a device of this character which is comparatively inexpensive in cost of production and which is so fashioned and constructed that it may with facility be applied for use without .the necessity for expert knowledge on the part of the user. "VVhen in position for use on the inner tube, the shield by its Jformation and construction readily vadjusts itself vwhen the tire is inflated and lfits neatly intoplace to present a smooth structure between the casing and inner `tube.` Due to the wrapping of the yshield .about the tube and the formation ofthe shield when in place, the danger of pinching the inner tube is eliminated, and means are provided whereby the shield is properly positioned and is anchored in this position against displacement within the damaged casing of the tire.

The invention consists in certain novel features of construction and combinations and arrangements of parts for accomplishing the above ends, as will hereinafter be more fully pointed out and claimed.

In the accompanying drawings we have illustrated one complete example of the physical embodiment of our invention wherein the parts are combined and arranged in accordance with the best mode we have so far devised for the practical application of the principles of our invention.

Figure l is a perspective view of a shield according to our invention shown in rolled position, ready to be unrolled and wrapped about an inner tube.

Figure 2 is a view of the shield unrolled and showing the inner face thereof.

Figure 3 is a detail sectional view, enlarged showing an edge of the shield.

Figure 4 is .a detail sectional view enlarged showing an edge of the intermediate anchoring portion of the shield.

As now in actual use the shields are fashioned in various sizes and are manufactured on suitable mandrels adapted for the purpose inorder'that they willconform to the curvature ofl the tire. The shields are prepared or manufactured for shipment and sale in the form shown in Figure l of the drawings and they may readily be unrolled from this form for facile application to the tire.

The' shield as shown is preferably of fabric either in a single thickness vor of cemented layers, and is formed in three portions as the innerr narrow portion 1 which is Wrapped directly on the tube; the outer wrapper portion 2 which is narrower than the inner portion; and an intermediate anchoring portion 3. The portion l is designed to be wrapped on the tube with the intermediate portion 3 at the inner side of the tube, and the wrapper portion 2 is designed tov be wrapped around the inner portion as indicated in Figure l. f VAt its ends the intermediate portion is provided with extensions 4 and 5 projecting beyond the greatest width of the shield, and

as seen in Figure 4 these lips or extensions are comparatively thinner than the body of the shield or the anchoring portion 3 in order that they may lie snugly between the tube and the casing of the tire and prevent the former being pinched between the casing and the shield.

The outer edges of the shield are also much thinner and'more flexible than the body of the shield as indicated in Figure 3 where a rubber strip 6 is cemented to the outer face of the shield. As shown this strip may be cemented to a layer of the fabric of which the shield is composed. The presence of these 'comparatively thin and more flexible edges for'the shield not only prevents pinching of the tube, but they also insure a smooth joint for the encased shield. The edge strip as indicated in Figi ure l passes around the edge of the shield 0n its outer face, while the inner face of the shield, as indicated in Figure 2 is a smooth plane face for contact with the inner tube and withv the inner wrapped part of the shield.

The shields are ot the proper length to be wrapped or passed twice around the tube leaving the ends or the shield. tree for movenicnt when the tube is inflated in order that the tube may adjust itself to the inflated tire.

The intermediate portion 3 however remains,

stationary at the inner side otl the tube and within the casing7 and because of its increased thickness and curvature it is less flexible than the wrapper portion of the shield. rfhus the intermediate portion becomes anchored at the inner side of the tire tube and remains stationary when the tube is iniatech butperin its the two wrapped portions of the shield to adjust themselves as tie cross-area ot the tube is increased. After the tubehas been ini-lated the shield is held in'stationary position and is prevented from creeping around the tire because of theV thin flexible edges of the shield which permit a close frictional Contact between it and the tube and its casing.

Because oft the construction of the shield with its intermediate semi-rigid anchoring portion, which conforms in curvature to the inner portion oit the tire tube, expert knowledge in applyingthe shield is not required, as the utility and applicability of this anchoring portion to the inner portion ot the tube will readily be apparent and the anchoring` portion could not within reason be placed in the incorrect position with relation to the tube. With the intermediate portion anchored in stationary position it will be apparent that the two ends of the shield are held in close triction'al contact and a double hold is secured not only on the shield itsell:l but between the shield and tube and between the shield and casing, to preventY loosening of the shieldai'terthe tire has been inflated;

From the above description taken in connection withr the drawingsit will be evident that we have provided a 'device of'this character whichfulills `.the condition, setf"torth as the object ot our invention and as is evidenced by the extensive use to which the device has been applied in the market.

Having, thus fully described our invention what we claim as new and desire to secure by Letters Patent isl. A repair shield having an intermediate. anchoring portion. adaptedV to engage the inner side` of a tire tube and inner. and outer` portionsone of which is adaptedto wrap around the tube and the other Ato encircle the' wrappedportion.

2. A repair shield. having an intermediate anchoring,I portion adapted Yto engage'the inner side of a tire tube, thin, flexible ei:- tensions at the ends of said anchoring portion, and saidv shield having a thin flexible edge strip.

A repair shield havinga stil'intermediate anchoring' portion and thin flexible extensions on said anchoring portion, an inner integral portion adapted to wrap about a tire tube, an outer integral portion adapted toA encircle the inner wrapped portion, and a thin lexible edge strip on said portions. V

ln testimony whereof we affix our signatures.

JAMES H. BURROW. GEORGE A; BURROVV. 

